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500 ml solution of benzoic acid (ka=6.6e-5) has a ph of 2.88. What is the molarity of benzoic acid?
What mass of helium gas is needed to pressurize a 112.0 L tank to 262 atm at 25°C?
The rate constant for the first order decomposition of SO2Cl2 is 1.37 x 10^-3 min-1 at a certain temperature. If the concentration is initially 0.500 M, predict it after 300 min.
Calculate the value of q, w, delta E , for the reversible isothermal expansion at 300k of 2.00 mol of a perfect gas
ethylene oxide polyol that has been generated from pentaerythritol with hexamethylene di-isocyanate, where the ratio of hydroxyl groups to isocyanate groups
A gas has a volume of 150 ml when its pressure is 0.947 atm. What will the volume of the gas be at a pressure of .987 atm, if the temperature remains constant
A solution is prepared by mixing 3.9 g of FeCl3 with enough water to make 125.0 mL of solution. Calculate the molarity of the solution.
Calculate the altitude at which only 10% of the mass of the atmosphre is above and 90% of the mass of the atmosphere is below.
if a sample of gas at 25.2 C has a volume of 536 mL at 637 torr, what will its volume be if the pressure is increased to 712 torr.
A gas is expanded in a cylinder from 2.00 L to 12.0 L against an external pressure of 1.80 atm. At the same time, it absorbs 2.56 x 103 J of heat from the surroundings. Calculate ?E of the gas in J. (1 L•atm = 101.3 J)
The concentration of an enzyme within a cell is extremely low realtive to other material present, yet functions effectively in its metabolic rate. How can enzyme function and never seem to run out?
Hemoglobin is the protein that transports O2 through the blood from the lungs to the rest of the body. In doing so, each molecule of hemoglobin combines with four molecules
Write the reaction which occurs when BH3 encounters water. Hint: a gas is evolved and boric acid is formed. How does acetone react with BH3?
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